Narrow ware loom



Nov. 12, 1940. T. MARTIN NARROW WARE LOOM Filed Feb. 10, 1940 2Sheets-Sheet l INVENTOR, 00221114.,

Tiau oii 44 ATTORNEY.

Nov. 12, 1940. T. MARTIN NARROW WARE LOOM Filed Feb. 10, 1940 2Sheets-Sheet 2 INVENTOR, Maxed,

Tran/50E! ATTORNEY.

Patented Nov. 12, 1940 UNITED STATES I Z'Z2114.6:

PATENT orrics '4 Claims.

This invention relates to looms and it consists in certain improvementsin a loom of the type of that set forth in the patent to Emery,No.1,057,- 133.

In that loom the shuttles obtain their motion from a pair of leversfulcrumed on parallel axes in and crossing the main batten and sointerconnected that their picking or motion-imparting ends move together(that is, simultaneously) toward and together from each other, motionbeing imparted to one of them from a constantly going shaft parallelwith the main batten through a shaft-like transmission which, on accountof the movement of the batten around an axis parallel with said shaft,is formed both telescopic and with a universal .joint. The. constructionis such that not only do the levers depend to an undue extent below thebatten but the space which is-required for the movements apart of theselevers and the picker-slides attached to them encroaches on spacemeasured lengthwise of the loom that might be utilized either to affordgreater clearance at the ends of the loom, assuming it contains a givenaggregate extent of actual weaving space, or to afford an increase insuch aggregate extent of actual, Weaving space. Thementionedtransmission, more-. over, is cumbersome and expensive toinstall and it encroaches on useful space under the batten.

In a loom of this type the mentioned levers impart their own movementsto so-called pickerslides each having a picker or pawl which is normallyheld out of the path of a picker-plate, of shorter length than thecombined ranges of movement of the two pickers and which is a (Usuallythere is a plurality of superposed shuttle-banks arranged in anauxiliary batten and such auxiliary batten isbysuitable pattern meansraised or lowered to bring a given shuttle-bank and hence itspicker-plate into the horizontal plane of action of the two pickers.)Besides improving the loom in the respects already indicated the presentinvention contemplates improving the adjustable elastic medium active oneither picker with a view to making it more permanent or enduring inconstruction than-chartally afiording support for the uprights 6. x Istuds l4 therein are fulcrumed two bell-crank 55 acterizes the elasticmedium of the said Emery patent.

In the drawings,

Fig. 1 is a front elevation of one end'portion of a loom embodying thepresent invention, the auxiliary batten being not shown;

Fig. 2 is a similar view on a larger scale of a fragment of what appearsin Fig. 1 illustrating, particularly, the improved elasticpicker-controlling medium;

Fig. 3 is a plan on a still larger'scale of parts appearing in Fig.2.

Figs. 4 and 5 are isometric views of the two movable parts of saidmedium; t

Fig. 6 is a front elevation of a certain bracket in which theinterconnected levers l5 are fulcrumed;

Figs. '7 and 8 are respectively a plan, partly in section, and a frontelevation of one such lever; and

Fig. 9 is a side elevation of what is shown in Fig. 1, with the means toreciprocate the batten and transmit motion to one of said levers,

The following parts are or may be of substantially the same as in thementioned Emery patent: The loom-frame l; the main batten 2 suitablysupported for back-and-forth movement in an arcuate, here an arched,path; the crankshaft 3 and the adjustable pitman 4 connecting aneccentric stud 5a on the gear 5, fast to the crank-shaft, with suchbatten; the uprights 6 fixed to the batten and connected by a pair ofguide-rods 1; and the auxiliary batten 8 suita-,, bly guided by parts(not shown) on the main batten for verticle movement from any suitablepattern means (not shown) acting through some ten having spacedshuttle-blocks, such as. [0, provided with races Ifla for the shuttlesll of the shuttle-banks, each such shuttle-bank forming a part of anintergeared train of whicha pickerplate-slide I2 is another part, thelatter being slidable on a rod to of the auxiliary batten and I2a beingits picker plate. When the auxiliary batten is raised or lowered tobring some intergeared train into the weaving plane itspickerplate-slide is then in position to undergo the motion (by meansnow to be described) which will pass the corresponding shuttles one wayor the other, or back and forth, through the warp sheds 50 that havebeen formed in the spaces between the blocks I0.

A bracket [3 is bolted to the batten, incidenlevers I5 in relativelyreversed positions, by

which I mean that, while each has an upstanding arm I5a, its arm I5bprojects reversely to and laps the corresponding arm I5b of the otherle- 5 ver. The arms I527 are longitudinally slotted at I5c. Fixed in theslot of one arm (here the inner one) and adjustable therein is a stud I6clamped to the arm by the coaction of a head IBa of the stud and a nutIl thereon. This stud is received and free to slide in the slot of theother arm. Thus if either lever be oscillated the other lever will alsooscillate and the movements of their upstanding arms will be togethertoward and together from each other. Referring, now,

to the means for oscillating one of these levers:

Adjustable around the stud 5a of the gear 5 is a segment I8, I9 beingany suitable means to clamp it to a spoke of the gear. A crank 20 isadjustable around the stud 5a as a pivot and relatively to the segment,which latter has a slot I8a receiving means 2i for clamping the crank tothe segment. The parts I8 and 29 are present so as to obtain the propertiming of the levers I5 with respect to the movements of the mainbatten. In a hanger 22 fixed to and depending from the main batten ispivoted a lever 23 movable in a vertical plane and having its rear endformed with a longitudinal slot 23a. This slot receives a stud 24adjustable in the longitudinal slot 20a of the crank 20. The forward endof the lever is to be pivotally and adjustably connected to one of thelevers 55, as preferably the one having the stud I6 fast therein. Forthis purpose there is a coupling comprising two members 2526. Member 26has a threaded stud 2511 which is screwed into member 26 and has alock-nut 21. The member 25 is forked and receives lever 23, pivotedtherein at 28 on an axis parallel with the crank shaft. The 40 lever I5having stud I6 has clamped in its slot I50 and by means of nuts 29 astud 30 and on this stud, between a shoulder 30a thereon and acotter-pin 3|, is pivoted the member 25 of the coupling. Thus in therotation of the gear 5 and 45 through the lever 23 and coupling the twolevers I5 will be oscillated.

On the rods I back of the upstanding arm of each lever I5 is apicker-slide 32 having a forward stud 32a received in a slot I5d of thearm 50 of the corresponding lever. Pivoted on an upstanding pin 33 insuitable projecting arms at the back of the picker-slide is a picker orpawl 34 notched at one end and having its other end bent forward andproviding a rounded surface 55 at 3411. The notched ends of the twopickers adjoin each other and the combined ranges of movement of thepickers exceeds the length of any picker-plate In. A spring 35connecting each picker with the picker-slide normally holds the pawl inthe position of Fig. 3, or out of the path of such picker-plate when itis being shifted by the other picker. Each picker is moved into positionto catch in its notched end the adjoining end of the picker-plate whenthe two pickers approach their limits of movement apart, as will appear:

A fault existing in the elastic medium which controls either picker inthe mentioned Emery loom is that a coiled spring is relied on to cushionthe picker and effect its movement into position to catch apicker-plate. The spring frequently breaks, putting the loom out ofcommission until it can be repaired. My construction avoids this fault:

1 On each upright 6 is an abutment 36 pivoted at its lower end theretoso that its upper or acting end is in line with the rounded or tail endof the adjoining picker. At the inner side of the abutment (i. e.,adjoining the pawl) is a stop 31 fixed to the upright by a bolt 38 buthaving a slot 31a receiving the bolt and extending more or lesshorizontally. At the opposite side of the abutment is a plate-spring 39fast at its upper end to the upright and having a knob 39a. at its lowerend engaging the abutment, the plate-spring normally holding the latteragainst the stop. By adjusting the stop the position of the abutment canbe set so as to cause it to shift the picker into position to catch anoutwardly moving picker-plate brought into the horizontal plane ofaction of the pickers.

By lapping the levers I5 several advantages result: Their over-allhorizontal extent is reduced to the minimum, whereby there is nounnecessary encroachment by the loom at its end on useful space, asbetween it and a loom alined therewith, or the actual weaving spaces maybe added to; the levers may be of light yet strong construction; and theconnection between them may be a simple stud (as I6) fast to one ofthem.

The construction is further such that neither lever depends so far as toencroach unduly on useful space below the level of the batten or torequire actuating means which would encroach on useful space under orback of the batten, it being noted that such means may involve a singlelever, as 23, movable in a vertical plane cutting the batten and quiteclose to the end of the loom; in view of the circumstance that lever 23and the lever I5 to which it is connected move in planes at right anglesto each other the coupling 25-26 is, in effect, a universal-jointconnection.

The slot I50 is of course present in one lever I5 to permit stud I6 toshift therein during their oscillations. As for the other slot in theother lever: The levers are adjustably bodily toward or from each otherto alter the spacing between them, to wit, by adjusting their fulcrumstuds I 4 in the slots I30 shown in bracket I3. If they are to undergoequal angular displacements whatever their spacing this is possible byadjusting the stud I6 in slot I5c of the other lever.

Having thus fully described my invention, what I claim is:

1. In a loom of the class described, the combination of the frame, abatten-including structure therein, a pair of pickers for moving backand forth the shuttle-including train of the loom, said pickers beingconfined by said structure to move lengthwise of the batten, and meansto move the pickers simultaneously toward and simultaneously from eachother including a pair of bell-crank levers fulcrumed in said structureon parallel axes crossing the batten, one arm of each lever projectinggenerally toward the other lever and such arms lapping each other andlying in different parallel planes perpendicular to said axes and onesuch arm having means, slidable lengthwise of the other such arm,intercoupling the levers for synchronous oscillation around their axesin reverse directions and the pickers being operatively connectedrespectively with the other arms of the levers to move back and forththerewith.

2. In a loom of the class described, the combination of the frame, abatten-including structure therein, means to reciprocate said structuretransversely of the batten including a rotary driving member having itsaxis parallel with the batten, a pair of pickers for moving back andforth the shuttle-including train of the loom, said pickers beingconfined by said structure to move lengthwise of the batten, means tomove the pickers simultaneously toward and simultaneously from eachother including a pair of hellcrank levers fulcrumed in said structureon parallel axes crossing the batten, one arm of each lever projectinggenerally toward the other lever and such arms lapping each other andlying in diiferent parallel planes perpendicular to said axes and onesuch arm having means, slidable lengthwise of the other such arm,intercoupling the levers for synchronous oscillation around their axesin reverse directions and the pickers being operatively connectedrespectively with the other arms of the levers to move back and forththerewith, and means, including a lever having its fulcrum parallel withthe batten, for transmitting motion from said driving member to one ofthe first-named levers.

3. In a loom of the class described, the combination of the frame, abatten-including structure therein, means to reciprocate said structuretransversely of the batten including a rotary driving member having itsaxis parallel with the batten, a pair of pickers for moving back andforth the shuttle-including train of the loom, said pickers beingconfined by said structure to move lengthwise of the batten, means tomove the pickers simultaneously toward and simultaneously from eachother including a pair of bellcrank levers fulcrumed in said structureon parallel axes crossing the batten, one arm of each lever projectinggenerally toward the other lever and such arms lapping each other andlying in difierent parallel planes perpendicular to said axes and onesuch arm having means; slidable lengthwise of the other such arm,intercoupling the levers for. synchronous oscillation around their axesin reverse directions and the pickers being operatively connectedrespectively with the other arms of the levers to move back and forththerewith, and means, including a lever fulcrumed in said structure, fortransmitting motion from said driving member to one of the first-namedlevers.

i. In a loom of the class described, the combination of the frame, abatten-including structure therein, a pair of pickers for moving backand forth the shuttle-including train of the loom,- said pickers beingconfined by said structure to move lengthwise of the batten, a pair ofparallel fulcrum studs arranged on said structure and one of them beingadjustable therein lengthwise of the batten, and means'to move thepickers simultaneously toward and simultaneously from each otherincluding a pair of bell-crank levers fulcrumed on said studs, one armof each lever projecting generally toward the other lever and V sucharms lapping each other and lying in different parallel planesperpendicular to said axes and a stud fast to and adjustable lengthwiseof one such arm and slidable lengthwise of the other such arm andintercoupling the levers for syn-'

